نتایج جستجو برای: Gafsa Basin
تعداد نتایج: 57054 فیلتر نتایج به سال:
The Gafsa mining basin district in Southwestern Tunisia is one of the most important producers of phosphate in the world. The exploitation of this district started at the beginning of the twentieth century a few years after the first discovery of this valuable resource. The over-exploitation of groundwater to wash the phosphate caused water-level decline in the main aquifers and the corollaries...
The raw phosphates in the Gafsa-Metlaoui phosphate basin are valorized by wet processes that performed laundries of Gafsa Phosphates Company (CPG, Gafsa, Tunisia) to reach market grades (>28% P2O5). This enrichment process allows increase P2O5 content elimination coarse (>2 mm) and fine (<71 µm) fractions. Mineralogical analysis has shown all investigated materials (raw phosphate, mark...
*Corresponding author: Ilhem Rjeibi, Research Unit of Macromolecular Biochemistry and Genetic, Faculty of Sciences of Gafsa, Gafsa 2112, Tunisia. Tel: +21620480884 E-mail: [email protected] Foundation Project: Supported by the Ministry of High Education and Scientific Research, MHSSR of Tunisia (Grant No. 11/TM06). The journal implements double-blind peer review practiced by specially invited in...
1 Institut Pasteur de Tunis, Tunis, Tunisia, 2 Regional Hospital of Gafsa, Gafsa, Tunisia, 3 United States Army Medical Materiel Development Activity, Fort Detrick, Maryland, United States of America, 4 Fast-Track Drugs & Biologics, LLC, North Potomac, Maryland, United States of America, 5 Assistance Publique Hôpitaux de Paris, Paris, France, 6 Walter Reed Army Institute of Research, Silver Spr...
With the following short review, we would like to remember our departed German friend and archaeologist Peter Nierling. He conducted several field trips in North Africa, Algeria, Lybia, Tunisia, on two occasions, 1997 1998, one of us (A. P.) accompanied him. During these travels, surveys were carried out mainly region Gafsa. In wider vicinity classical Paleolithic/Mesolithic sites El Mekta (de ...
Soil contamination by heavy metals through the application of a phosphate fertilizer is key issue for sustainable agriculture. Among contaminants, cadmium (Cd) considered most hazardous to human beings’ health and surrounding environment. X-ray diffraction (XRD), combined with binocular mineralogical analysis chemical analysis, was used determine C(I) C(II) layers’ composition. In (+71 µm)-size...
There are various methods to evaluating phosphate rock for direct application. The first approach is solubility test of Phosphate Rocks (PR) using chemical extractant. In this study to compare the effectiveness of direct application of PRs, two samples of a sedimentary unbeneficiated PR from Lar mine of Yasooj and two samples of concentrated PR of Asfordi igneous PR of Yazd in Iran along with o...
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